161802480 has 320 divisors, whose sum is σ = 624245760. Its totient is φ = 33841152.

The previous prime is 161802463. The next prime is 161802491. The reversal of 161802480 is 84208161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1180972 + ... + 1181108.

It is an arithmetic number, because the mean of its divisors is an integer number (1950768).

Almost surely, 2^161802480 is an apocalyptic number.

161802480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161802480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312122880).

161802480 is an abundant number, since it is smaller than the sum of its proper divisors (462443280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161802480 is a wasteful number, since it uses less digits than its factorization.

161802480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 161802480 is about 12720.1603763475. The cubic root of 161802480 is about 544.9145336338.

The spelling of 161802480 in words is "one hundred sixty-one million, eight hundred two thousand, four hundred eighty".